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Share-Based Compensation - Theravance Biopharma Equity Plans (Details) $ in Millions			12 Months Ended
	May 02, 2023 shares	Jun. 02, 2014 plan	Dec. 31, 2024 USD ($) shares	Dec. 31, 2014	Dec. 31, 2013 item shares
Share-Based Compensation
Number of plans \| plan		3
Total number of shares available for future issuance			7,874,007
2013 Equity Incentive Plan
Share-Based Compensation
Extended term of the equity incentive plan	10 years
Number of shares reserved for issuance reduced	3,808,287
Total number of shares available for future issuance			4,426,322
2013 Equity Incentive Plan \| Employee Stock Option
Share-Based Compensation
Term (in years)					10 years
Vesting period					4 years
Period of forfeiture of unvested option upon termination of service					3 months
2013 Equity Incentive Plan \| Employee Stock Option \| Vesting after one year
Share-Based Compensation
Vesting period					1 year
Vesting of RSU (as a percent)					25.00%
2013 Equity Incentive Plan \| Employee Stock Option \| Monthly vesting over the remaining three years
Share-Based Compensation
Vesting period					3 years
Vesting of RSU (as a percent)					75.00%
2013 Employee Share Purchase Plan
Share-Based Compensation
Automatic increase in number of shares that may be issued					571,428
Purchase price as a percentage of fair market value of stock					85.00%
Consecutive and overlapping offering periods					24 months
Number of purchase periods \| item					4
Duration of purchase period					6 months
Maximum contribution as percent of compensation					15.00%
Share-based payment arrangement \| $			$ 0.5
Total number of shares available for future issuance			3,447,685
2013 Employee Share Purchase Plan \| Maximum
Share-Based Compensation
Shares that may be issued as percent of prior year outstanding shares					1.00%
2014 NEEIP \| Employee Stock Option
Share-Based Compensation
Term (in years)				10 years
Vesting period				4 years
Period of forfeiture of unvested option upon termination of service				3 months
2014 NEEIP \| Employee Stock Option \| Vesting after one year
Share-Based Compensation
Vesting period				1 year
Vesting of RSU (as a percent)				25.00%
2014 NEEIP \| Employee Stock Option \| Monthly vesting over the remaining three years
Share-Based Compensation
Vesting period				3 years
Vesting of RSU (as a percent)				75.00%